If you are using a wireless HDMI setup why would you need or want to go through your selector box? A number of the wireless HDMI systems have a loop-through so you can take the output of the receiver through the wireless and then to the front TV. The rear TV would receive the wireless signal. Your switch box is no doubt coax and is pretty much useless in today's world.
The limitation of using the wireless HDMI is that the two TVs will have to watch the same program. If you want the TVs to be able to watch different programs then you need two receivers and you would probably want to use an appropriate method for sending a separate satellite signal to the rear TV probably through a new coax from the Trav'ler most likely installed on the roof.